Matsushita Electric Industrial Co., Ltd.

Other

Panasonic Corporation

Toyota Jidosha Kabushiki Kaisha

Panasonic Intellectual Property Management Co., Ltd.

Panasonic Ev Energy Co., Ltd.

Denso Corporation

Tadao Kimura

Toshiaki Nakanishi

Yusai Murakami

Yoshiaki Kikuchi

Kunio Kanamaru

Kiwamu Inui

Katsunori Komori

Seiji Bito

Shinji Hamada

Munehisa Ikoma

Yoshinori Toyoguchi

Hiromu Matsuda

Katsuhiko Yamaguchi

Toshiyuki Sekimori

Kazuo Tojima

Masayoshi Iwase

Tomokazu Yamauchi

Norito Yamabe

Yoshiaki Ogata

Osamu Yamamoto

Kohei Suzuki

Toshihiro Nishii

Seiji Yamaguchi

Katsumi Kozu

Takuya Nakashima

Noriyuki Fujioka

Takuma Iida

Keiichi Minamiura

Shinichiro Ito

Toshihiro Katsuda

Katsumi Kouzu

Koh Watanabe

Shuuhei Marukawa

Fumihiko Asakawa

Susumu Ukita

Yoshimi Shoji

Masayoshi Toyota

Yasuhiro Takahashi

Takayuki Hayashi

Tatsuhiko Suzuki

Naohisa Morimoto

Hiromi Kajiya

Yohei Ishii

Hiromichi Kuno

Fumihiko Yoshii

Manabu Kakino

Tohru Watanabe

Gota Asano

So Kuranaka

Tomoya Katoh

Yoshiyuki Nakayama

Takao Matsunami

Masaaki Takegata

Haruyoshi Yamashita

Makoto Hashimoto

Masaru Yonemoto

Kouji Otsubo

Sadao Mizuno

Yozoh Ogino

Hiroshi Yamaji

Masaki Mitsui

Takuya Koujiya

In a vehicle power supply system mounted on an electric vehicle, a vehicle controller switches a discharge power limit to a motor during travel of the electric vehicle according to degradation information of a battery module to which a plurality of cells are connected, the degradation information being calculated in advance before the travel of the electric vehicle. For example, the vehicle controller switches a limit of a maximum acceleration and/or maximum speed of the electric vehicle as the switching of the discharge power limit.

Vehicle power supply system and vehicle dispatch system

A temperature sensor detects a temperature at a contact between a live part of connector for a first circuit device and a live part of a connector a for second circuit device. A controller determines the occurrence of a contact failure between the live parts if a difference between an amount of change in temperature detected by the temperature sensor per predetermined time and an amount of change in ambient temperature per predetermined time is greater than a set value.

Contact failure detection system

A battery pack is provided which includes: a state detection section which decides whether secondary batteries are in an electricity-charged state or in an electricity-discharging state; a power decision section which decides whether the secondary batteries are in a power-on state or in a power-off state; and a residual-capacity calculation section which, if the state detection section decides that they are in the electricity-charged state, calculates the residual capacity of the secondary batteries by accumulating a current value detected by a current sensor, and if the state detection section decides that they are in the electricity-discharging state, calculates the residual capacity of the secondary batteries by acquiring the voltage of the secondary batteries when the power decision section decides that they are in the power-off state.

Battery pack

The present invention provides a power source system that increases the power supply capacity of a power source device and continuously supplies the power necessary for a load device when a power source device stops. A control unit has a state quantity setting unit that sets a first target state quantity indicating a state of charge of the power storage device that is to be a target value when charge and discharge of the power storage device are controlled. When the power source device stops, the state quantity setting unit can change the first target state quantity to a second target state quantity that is to be a target value exceeding the first target state quantity and can increase the target state quantity of the power storage device. As a result, when the power source device stops, charge and discharge of the power storage device are controlled on the basis of the target state quantity exceeding that during the operation of the power source device. Therefore, the state of charge of the power storage device can be improved over that during the operation of the power source device. As a result, the power supply capacity of the power source device can be increased and the power necessary for the load device can be continuously supplied, in place of the power source device.

Power source system, power supply control method for the power source system, power supply control program for the power source system, and computer-readable recording medium with the power supply control program recorded thereon

A secondary battery deterioration judging device is provided with an overdischarge detecting section for detecting the overdischarge of a secondary battery, the deterioration of which is to be judged, a computing section for integrating a value indicating the deterioration of the secondary battery while the overdischarge is detected by the overdischarge detecting section, and a judging section for judging a deterioration state of the secondary battery based on an integration value obtained by the computing section.

Secondary battery deterioration judging device and backup power supply

A hybrid power supply unit, comprises a high-capacity nonaqueous electrolyte battery group and a high-power nonaqueous electrolyte battery group different in discharge characteristics connected to each other in parallel. The high-capacity nonaqueous electrolyte battery group has a 0.2 C discharge capacity per cell greater than that of the high-power nonaqueous electrolyte battery group, and the high-power nonaqueous electrolyte battery group has a rate of 5 C discharge capacity per cell to 0.2 C discharge capacity per cell (5 C discharge capacity/0.2 C discharge capacity) greater than that of the high-capacity nonaqueous electrolyte battery group.

Hybrid power supply unit

A battery pack includes: a secondary battery; a positive electrode terminal for connecting a positive electrode of the secondary battery to an external electric device; a negative electrode terminal for connecting a negative electrode of the secondary battery to the electric device; a communicator for communicating with the electric device; a communication terminal adapted to be used in connecting the communicator to the electric device to send a signal for the communication; and an electric power receiving terminal for receiving an electric power from the electric device to operate the communicator, wherein the communicator is operated by the electric power received by the electric power receiving terminal.

Battery pack having a communicator for communicating with electric device and electric device using the same

A battery pack is provided which includes: a battery set having a plurality of secondary-battery cells connected in series and in parallel; and a battery-abnormality detection circuit. The battery-abnormality detection circuit controls a battery-set circuit separation switch, so as to detect an abnormality in each secondary-battery cell based on a change in the voltage of each cell when parallel-connection separation switches are turned off, and if detecting an abnormal secondary-battery cell, so as to separate the series module including this cell from a battery-set body.

A positive side main contactor serving as a contact switching device on the positive side, which is connected between a positive electrode terminal of a battery pack and a high potential input terminal of an inverter, and a negative side main contactor serving as a contact switching device on the negative side, which is connected between a negative electrode terminal of the battery pack and a low potential input terminal of the inverter, are arranged so that moving contacts of these are moved forward and backward in directions that are different from each other, e.g. by 90 degrees. Thus, a situation in which the two main contactors are simultaneously turned ON upon external impact can be avoided, and consequently, it is possible to achieve the same impact resistance as was previously possible with a smaller spring force than was previously required. Therefore, it is possible, for example, to reduce the number of turns of the winding in an electromagnetic coil of each of the main contactors or to reduce the winding diameter. The size and the cost of the contact switching device are reduced while maintaining reliability.

Electric vehicle

When a power switch portionis in an open state and a charge/discharge path of the secondary batteryis in a disconnected state, an electromotive force calculation portioncalculates a battery electromotive force Veq by subtracting a polarized voltage Vpol stored in a polarized voltage storage portionfrom an open-circuit voltage OCV measured by a voltage measurement portion. Based on the electromotive force, a state-of-charge estimation portionestimates a state of charge SOC. Thus, a polarized voltage to be considered for the estimation of SOC can be limited. The state of charge (SOC) of a secondary battery can be estimated with high accuracy and quickly.

Method and apparatus for estimating state of charge of secondary battery

A battery module is constructed of an integral battery case which is constituted by forming a plurality of prismatic cell cases into a unitized body, wherein positive electrode plates and negative electrode plates laminated alternately upon one another with intervening separators are respectively accommodated in each of the cell cases, thereby constituting a plurality of cells, these cells being electrically connected in series. A plurality of such battery modules are arranged in a direction in which the electrode plates within each cell are laminated in a condition with coolant passages formed between the battery modules, and bound tightly together with end plates arranged at both ends in the direction of adjacent arrangement of the battery modules.

In the process of forming a through-hole or blind-hole at desired positions of a the substrate material, the present invention sets a drilling target position for each hole and a plurality of auxiliary drilling positions at a periphery of the drilling target position, and performs a plurality of drillings at the drilling target position and the plurality of auxiliary drilling positions. In another preferred embodiment of the present invention, a plurality of drillings are performed only at the auxiliary drilling positions per one hole at the desired position. According to the present invention, through-holes or blind-holes having several sizes of diameters can be formed by using one drilling jig under a single drilling condition. Accordingly, it is possible to efficiently produce circuit boards at low costs.

Circuit board production method and circuit board production data

A battery pack system is provided that can be replaced easily without modifying the side of an appliance using this battery pack system, on which charging is controlled by a voltage control, and includes a secondary battery with high performance that undergoes charging by a current control. A battery pack system is provided with a battery including at least one unit cell serving as a secondary battery with a positive electrode containing a nickel oxide as an active material, a detecting portion for detecting a battery state including a charging state in the battery, and a current adjusting portion, that is connected in series with the battery, for adjusting a charging current value according to the charging state detected by the detecting portion.

Battery pack system

A method for recycling a battery pack is provided that enables a degraded battery pack to be replaced at a low cost while maintaining the advantages of a conventional sealed-type nickel-metal hydride secondary battery as being free from maintenance or leak of an electrolyte. The battery pack accommodates a battery module having a plurality of cells, which are a sealed-type nickel-metal hydride secondary battery, combined with each other. When the battery pack is judged as being degraded in a market, the battery pack is collected from the market as a battery to be replaced; a cell or battery module judged as being degraded is renewed by adding an electrolyte thereto; the battery module is installed in the battery pack again; and the battery pack is supplied as a replacement battery.

Method for recycling battery pack

A method for activating a secondary battery is provided that enables sufficient activation of a secondary battery in a short time. A secondary battery is activated with a varying current, e.g., pulse current, in which current values in a charge direction and a discharge direction are repeated alternately in a cycle ranging from 1 to 30 seconds.

Method for activating secondary battery

Growing community of inventors

Kobe, Japan

Tadao Kimura